<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org/">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>登录</h1>
<hr>

<p style="color: red" th:text="${msg}"></p>
<form th:action="@{/login}" method="post">
    <div>用户名：<input type="text" name="username"></div>
    <div>密码：<input type="password" name="password"></div>
    <div><input type="submit"></div>
</form>
</body>
</html>